Let’s look closer at a deck of playing cards!
The design for the current deck was created in 15th century France.
Each “king”and their accompanying suit represented a historic leader and his civilization.
For instance, the suit, spades represents the Biblical Middle East and King David.
The suit, diamonds, represents the Roman Empire and it’s king signifies Julius Caesar.
Accordingly, Charlemagne is the king of hearts and this suit signifies the Holy Roman Empire.
Finally, the king of clubs represents Alexander the Great and Ancient Greece.